STM1817TWX7F Integrated Circuits (ICs)

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Simple Reset/Power-On Reset
Number of Voltages Monitored:	1
Output:	Push-Pull, Totem Pole
Reset:	Active High
Reset Timeout:	100 ms Minimum
Voltage - Threshold:	3.06V
Operating Temperature:	-40°C ~ 105°C (TA)
Mounting Type:	Surface Mount
Package / Case:	TO-236-3, SC-59, SOT-23-3
Supplier Device Package:	SOT-23-3
Base Part Number:	STM1817

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Introduction

The STM1817TWX7F is a 3V/5V input, single channel, supervisor module based on STMicroelectronics\' STM18X17 family of products. It is designed to provide voltage supervision, reset, or open-drain output functions. The device is capable of sensing the voltage rail with an external resistor divider and can perform voltage detection and reset/open-drain control with a large number of user-selectable options.

Applications

The STM1817TWX7F is designed for various applications including power supply monitoring, voltage detection, and reset/open-drain control for multiple voltage rails in power distribution networks and sensitive analog systems. The device is suited for many applications such as gaming machines, metering and industrial control systems, embedded systems with multiple voltage rails, hard disk drive power supplies, automotive power systems, and battery management systems.

Working Principle

The STM1817TWX7F acts as a digital monitor for a voltage. It can sense the voltage rail with an external resistor divider, and can perform voltage detection and reset/open-drain control with different user-selectable options. The device has a push-pull open-drain output that is open or active low when asserted. The STM1817TWX7F can be used as a voltage supervisor by monitoring a voltage rail and generating an active-low reset signal when it drops below a predetermined threshold voltage set by the user. The device allows for adjustable trip point, hysteresis, and reset duration values. The device also has a built-in power-on reset option to ensure accurate initialization of microprocessor systems and to prevent spurious reset at power transitions. The supervisor is also capable of providing an open-drain output that can be used to control a power switch, reset circuits, or other applications.The device has a power-down mode to reduce the power consumption when the system is not in use. This feature is particularly useful for applications such as battery-powered systems and systems with multiple voltage rails.

Conclusion

The STM1817TWX7F is an ideal solution for applications requiring voltage supervision, reset, or open-drain output functions. This device is extremely versatile and cost-effective and provides low power consumption and a wide range of user-selectable options. With its high performance and numerous features, the STM1817TWX7F is an indispensable component for many embedded systems.

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